Invention Grant
- Patent Title: Shadow directory structure in a distributed segmented file system
- Patent Title (中): 分布式分段文件系统中的影子目录结构
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Application No.: US11841552Application Date: 2007-08-20
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Publication No.: US08316066B1Publication Date: 2012-11-20
- Inventor: Sudhir Srinivasan , Boris Zuckerman
- Applicant: Sudhir Srinivasan , Boris Zuckerman
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: G06F7/00
- IPC: G06F7/00

Abstract:
A file server is provided for use in an association of devices that implements a distributed-file system, the association of devices including file servers that each are configured to control separate segments of the distributed-file system. The file server includes a memory interface configured to communicate with a memory storing at least one of the segments of the distributed file system, and a processor coupled to the memory interface and configured to: identify a file system object that resides on a first segment in the distributed file system and that is directly pointed to by a first remote ancestor directory that resides on a second segment separate from the first segment; and store a first shadow tree entry in a selected segment other than the second segment, the first shadow tree entry providing a pointer to the file system object and being disposed in a shadow tree, where the first shadow tree entry provides an alternative to the first remote ancestor directory to access the file system object in the distributed file system.
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